The Mercenary (Italian: Il mercenario), known in the UK as A Professional Gun, is a 1968 Zapata Western film directed by Sergio Corbucci. The film stars: Franco Nero, Jack Palance, Tony Musante, Eduardo Fajardo and Giovanna Ralli, and features a musical score by Ennio Morricone, taking inspiration from his work in Guns for San Sebastian, and Bruno Nicolai.